The feet are too short to allow thermodynamic air flow. You need room for a layer of cool air to force the warm air up. My roku runs at about 105 but never gets warm to the touch. The xs has it's heat sink on top though if I remember right. It also has a rubber ring instead of feet so there would be no air flow. That ring would just increase the heat by sealing it in.
Nun sacciu, nun vidi, nun ceru e si ceru durmiv.
I know nothing, I see nothing, I wasn't there,
and if I was there, I was asleep.